CHINT NB8-125 Moulded Case Circuit Breaker,
is engineere for reliable protection and isolation in low-voltage distribution systems up to AC 415V/DC 220V and 125A.
It safeguards against overload, short-circuit, and insulation faults in commercial,
residential, and light industrial applications. Built to IEC 60947-2 and GB/T14048.2 standards,
the NB8-125 combines compact size, thermal-magnetic tripping,
and high endurance — ensuring long-term performance and operational safety.
- Function: Overload, short-circuit protection, and isolation
- Standard Compliance: GB/T14048.2, IEC 60947-2
- Certifications: CCC, CE, CB, RoHS
- Rated Current (In): 80A, 100A, 125A
- Rated Voltage (Ue):
- AC230/240V or DC110V (1P)
- AC400/415V or DC220V (2P)
- AC400/415V (3P/4P)
- Rated Frequency: 50/60Hz
- Rated Breaking Capacity (Icu):
- AC: 6kA (up to 100A), 4kA (at 125A)
- DC: 5kA
- Rated Service Breaking Capacity (Ics): 7.5kA
- Rated Insulation Voltage (Ui): 630V
- Rated Impulse Withstand Voltage (Uimp): 6kV
- Dielectric Test Voltage: 1,890V at 50Hz (1 min)
- Tripping Characteristics:
- Curve C: AC (8In ±20%), DC (11In ±20%)
- Curve D: AC (12In ±20%), DC (17In ±20%)
- Working Principle: Thermal-magnetic
- Poles Available: 1P, 2P, 3P, 4P
- Mechanical Life: 20,000 operations
- Electrical Life: 10,000 operations
- Terminal Connection Type: Cable / Pin-type busbar
- Terminal Size:
- Min: 25mm²
- Max: 50mm²
- Tightening Torque: 3.5 N·m
- Strip Length: 14mm
- Reference Temperature: 40°C or 50°C
- Working Temperature: −35°C to +70°C
- Storage Temperature: −35°C to +85°C
- Altitude: ≤2000m
- Flame Retardant Grade: V-0
- Pollution Degree: 3
- Connection Type: From top or bottom
- Protection Degree:
- Direct Mounting: IP20B
- Inside Cabinet: IP40B
- Accessories Supported: S9, V9, XF9, XF9J, OVT-1, OUVT-1
- Mounting Type: DIN rail or fixed mounting
- Dimensions (mm):
- Height: 86
- Width: 27 (1P), 54 (2P), 81 (3P), 108 (4P)
- Depth: 76.8
